MARWIS-UMB
Operating Manual V 3.3 / 9 Dec 2019
17 Disturbances
17.1 Possible errors occurring on the MARWIS-UMB / STARWIS-UMB
Error descriptions
Cause / remedy
Device does not allow polling or does
not respond
•
Check status-LED
•
Check supply voltage
•
Check interface connection
•
incorrect device-ID → check ID; devices are
deliverd with ID 1.
Device delivers implausible values
•
Check status-LED
•
Check for compliance with the sensor
installation instructions
•
Has the device been commissioned
correctly? Repeat if necessary
•
Has the correct adaption profile been
selected?
Device transmits error value 2bH (43d) Error in measurement; value cannot be detrermined
Device transmits error value 24h (36d)
A channel was requested that is not available on this
device.
Device transmits error value 28h (40d)
Device is in initialization phase after start-up → wait
until first measurement is complete
Device transmits error value 31h (49d)
Faulty adaption; carry out an adaption on
representative dry ground
Device transmits error value 50h (80d)
Device is being operated above the specified
measuring range.
Device transmits error value 51h (81d)
Device is being operated below the specified
measuring range.
Device transmits error value 55h (85d)
The device is unable to execute a valid measurement
due to the ambient conditions.
Device transmits an error value which is
not listed here.
There may be several reasons for this behaviour →
contact the manufacturer's technical support team.
17.2 Interfering factors which can influence the measurement result
●
Lengthwise oriented road markings, tarmac seams
Due to their longitudinal orientation these disturbances can adopt an all but static character.
Disturbances from road markings which lie crosswise towards the direction of travel are
noted shorter when running over them and can therefore be filtered out for the resulting
value.
●
Tunnel lighting
●
Longer persisting disturbances (like road markings, tarmac seams, manhole covers....) due
to the vehicle not moving
●
Extreme rainfall
●
Cast shadow (in sunny weather, shadow e.g. from trees, quick alternation between sunny
and shady locations)
●
Heat from exhaust fumes
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Chapter 17, Disturbances
